There have been one or two times in my IT career I've had to fix something and I didn't have a clue how the user figured out how to fuck it up that bad, because the exact steps were so batshit insane there was no way to predict anyone would ever take them without high expertise in the field.
This feels a little like that, but instead of "I ran this script I found and things went downhill from there", it's a guide to Baby's First Financial Fraud.